Warning: Permanently added '10.128.0.189' (ECDSA) to the list of known hosts. executing program [* ] A start job is running for dev-ttyS0.device (8s / 1min 30s)[** ] A start job is running for dev-ttyS0.device (9s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (9s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (10s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (10s / 1min 30s)[ 17.734040][ T22] audit: type=1400 audit(1625313335.445:8): avc: denied { execmem } for pid=330 comm="syz-executor255" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 17.765159][ T331] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 17.774546][ T331] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor255: reserved inode found cleared - inode=1 [ 17.787594][ T331] incfs: Can't find or create .index dir in ./file0 [ 17.794965][ T331] BUG: Dentry ffff8881ecd21000{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 17.804695][ T331] ------------[ cut here ]------------ [ 17.810147][ T331] WARNING: CPU: 0 PID: 331 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 17.818434][ T331] Modules linked in: [ 17.822308][ T331] CPU: 0 PID: 331 Comm: syz-executor255 Not tainted 5.4.125-syzkaller-00243-geaef435f4357 #0 [ 17.832432][ T331] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.842460][ T331] RIP: 0010:umount_check+0x179/0x1c0 [ 17.847709][ T331] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 05 e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 a7 a3 af ff 48 83 c4 08 <0f> 0b e9 fd fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c d4 fe ff [ 17.867561][ T331] RSP: 0018:ffff8881e626fa58 EFLAGS: 00010282 [ 17.873628][ T331] RAX: 0000000000000054 RBX: ffffffff85faa080 RCX: 94893908c87f2600 [ 17.881567][ T331] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 17.889523][ T331] RBP: ffff8881e950f420 R08: ffffffff814e90a7 R09: ffffed103edc5e08 [ 17.897462][ T331] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 17.905502][ T331] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecd21000 [ 17.913449][ T331] FS: 00000000005a2300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 17.922357][ T331] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.928904][ T331] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 17.936964][ T331] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.944904][ T331] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.952842][ T331] Call Trace: [ 17.956104][ T331] d_walk+0x2d9/0x540 [ 17.960070][ T331] ? __d_free+0x20/0x20 [ 17.964193][ T331] shrink_dcache_for_umount+0x8a/0x1a0 [ 17.969633][ T331] generic_shutdown_super+0x63/0x2a0 [ 17.974887][ T331] kill_block_super+0x79/0xd0 [ 17.979533][ T331] deactivate_locked_super+0xaf/0x100 [ 17.984869][ T331] deactivate_super+0x1b3/0x270 [ 17.989687][ T331] ? deactivate_locked_super+0x100/0x100 [ 17.995301][ T331] ? dput+0x4de/0x5d0 [ 17.999252][ T331] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.004332][ T331] ? find_next_bit+0xc6/0x110 [ 18.008976][ T331] cleanup_mnt+0x432/0x4e0 [ 18.013360][ T331] task_work_run+0x186/0x1b0 [ 18.017918][ T331] do_exit+0xcb9/0x2bf0 [ 18.022041][ T331] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.027383][ T331] ? __up_read+0x6f/0x1b0 [ 18.031683][ T331] ? __down_read+0x210/0x210 [ 18.036252][ T331] ? check_preemption_disabled+0x154/0x330 [ 18.042024][ T331] ? debug_smp_processor_id+0x20/0x20 [ 18.047476][ T331] do_group_exit+0x15c/0x2c0 [ 18.052051][ T331] ? do_user_addr_fault+0x6b0/0xb40 [ 18.057217][ T331] __do_sys_exit_group+0x13/0x20 [ 18.062129][ T331] __se_sys_exit_group+0x10/0x10 [ 18.067047][ T331] __x64_sys_exit_group+0x37/0x40 [ 18.072061][ T331] do_syscall_64+0xcb/0x1e0 [ 18.076532][ T331] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.082391][ T331] RIP: 0033:0x442e99 [ 18.086288][ T331] Code: Bad RIP value. [ 18.086294][ T331] RSP: 002b:00007ffcca1d0148 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 18.086307][ T331] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e99 [ 18.106666][ T331] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 18.114636][ T331] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 18.122762][ T331] R10: 0000000001000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 18.130714][ T331] R13: 0000000000000001 R14: 000000000